Inclinable press structure



Dec. 27, 1955 R. E. WISSMAN INCLINABLE PRESS STRUCTURE 4 Sheets-Sheet 1 Filed July 15, 1953 INVENTOR. R ELLBEN E. WISSMAN BY A A /TZW'W ATTORNEYS Dec. 27, 1955 R. E. WISSMAN INCLINABLE PRESS STRUCTURE 4" Sheets-Sheet 2 Filed July 15, 1953 INVENTOR.

E. WISSMAN BY TM 7AM ATTORNEYS Dec. 27, 1955 R. E. WISSMAN INCLINABLE PRESS STRUCTURE 4 Sheets-Sheet 3 Filed July 15, 1953 ATTORNEYS R. E. WISSMAN INCLINABLE PRESS STRUCTURE Dec. 27, 1955 4 Sheets-Sheet 4 Filed July 15, 1955 BY OFBEUBEN E.W|SSMAN AMA; f 7% ATTORNEYS INCLINABLE PRESS STRUCTURE Reuben E. Wissrnan, Minster, Ohio, assignor to The Minster Machine Company, Minster, (Elite, :1 corporation of fihio Application July 15, 1953, Serial No. 368,050

Claims. (Cl. 100-231) This invention relates to press structures, particularly inclinable press structures, and more particularly still to an improved base or press legs and the inclining mechanism by means of which the press frame is tiltable on the press base.

A great many presses, particularly smaller mechanical presses, are constructed so as to be tiltable backwardly to various positions, either for convenience in feeding stock through the machine, or in the discharging of the operated pieces or the scrap from the machine during operation thereof.

Heretofore presses of this nature have generally been constructed with the press frame pivoted on the base, the base usually comprising spaced legs with a screw threaded rod between the frame and base for tilting the frame to various positions on the base. Slots in the base receive clamp screws in the frame providing means for locking the press frame in its adjusted positions.

With this type of inclining structure and locking arrangement, considerable time is required to tilt the press frame on the bed and clamp it thereto. devices are also rather difficult to operate, particularly where there may be an accumulation of shop dust and other foreign material on the screw threaded rod of the inclining attachment.

Having the foregoing in mind, it is a primary object of the present invention to provide an improved inclining attachment for an inclinable press of the nature referred to which will overcome the dithculty referred to above.

A still further object is the provision of a novel base structure for an inclinable press which is stronger than previous base structures, enhances the appearance of the press, and provides compartments for receiving press auxiliaries such as electrical and pneumatic components for the control thereof.

These and other objects and advantages will become more apparent upon reference to the following description taken in connection with the accompanying drawings, in which:

Figure 1 is a side elevational view of an inclinable press constructed according to the present invention;

Figure 2 is a plan sectional view, indicated by line 2-2 on Figure 1, showing the inclining attachment;

Figure 3 is a view similar to Figure 2 but shows the inclining attachment in a different position of adjustment than in Figure 2, and with a portion of the surrounding frame broken away;

Figure 4 is a sectional view indicated by line 4-4 on Figure 3, showing a slide block and a roller carried thereby forming a part of the inclining attachment;

Figure 5 is a partial front elevation of the press;

Figure 6 is a perspective view looking at the press from the front and somewhat to the right side thereof showing the construction of one of the legs forming a part of the press base;

Figure 7 is a perspective view looking at the inside of the press leg having the inclining attachment mounted therein; and

The adjusting 2,728,288 Patented Dec. 27, 1955 Figure 8 is a fragmentary side elevational view showing a press with an inclining attachment according to this invention arranged for motor operation.

Referring to the drawings somewhat more in deail, and with particular reference to Figures 1 through 7, the press comprises a main press frame 10 having the working space 12 with a platen 14 reciprocable therein, and which platen is connected to a crankshaft in the upper portion of the press frame that is driven by a gear train leading through from an electric drive motor 16 supported on the press frame. Suitable clutch and brake means may selectively connect the crankshaft with the press frame to hold the crankshaft or platen stationary or connect the crankshaft with the said gearing for driving the crankshaft or platen, and operation of these pneumatic clutch and brake elements can be accomplished by a supply of air under pressure thereto through a conduit 18.

The press bed, as will be seen in Figures 1 and 5, comprises the spaced legs 20 and 22, and each of which is pivotally connected with the press frame by a pivot bolt 24. The legs 20 and 22 are preferably interconnected by some laterally extending structure 26 to form a relatively rigid unit.

Each leg is relatively thick in the lateral direction of the press and extends from adjacent the front of the press frame to beyond the rear thereof. Along the top of each of the said legs is a vertically upstanding rib 28 provided with a series of spaced apertures 30. The apertures 30 are for the purpose of receiving clamping bolts that are threaded into the apertures 32 in the side of the press frame. As the press frame is tilted about the pivot bolts 24 the apertures 32 thereof respectively register with the apertures 30 in rib 28 in the adjusted positions provided for the press frame. The said clamping bolts are identified at 34 in Figures 1, 5, and 6.

The leg 22 in the region thereof immediately beneath rib 28 is provided with a slot 36 which receives a sliding block 38 carrying a roller 44 that engages the back edge of the press frame. This construction is illustrated in Figures 2, 3, 4, and 7, wherein it will be noted that the slot 36 in the leg 22 receives a sliding block 38 which is retained therein by a gib 40 and which block comprises a stub shaft portion 42 on which said roller 44 is rotatably mounted, and which is retained in position on the shaft by the screw and washer 46.

The block 38, as will be seen in Figures 3, 4, and 7, is bored for receiving a screw 4-8 which is threaded through a nut 54) mounted in a counterbore in block 3% and secured thereto by screws 52 passing through ear portions 53 (Fig. 4) on the end of the nut that overlie the end of block 38.

The screw 48 is formed with a collar 54 adjacent the rear end of leg 22 and which collar abuts one side of a thrust bearing 56 received in a bore 58 in a bearing cap 69 secured to the rear end of leg 22 by cap screw 62. On the other side of bearing cap 60 is a second collar 64 fixed to the screw or threaded rod 48 as by the tapered pin 65 shown in dotted outline in Figure 3 so that the said screw or rod is rotatably supported in leg 22 against axial movement therein. The extreme end of the rod or screw or bearing cap may be squared, as at 66, for rotation of the screw to adjust block 38 along the guide 36.

As shown in Figures 2, 3, and7, roller 44 bears against the back edge of the side of press frame It in supporting engagement therewith. The pivotal support of the press frame as formed by pivot bolts 24 in the legs 20 and 22 is located somewhat forwardly of the center of gravity of the press frame, and thus as block 38 is adjusted back and forth in guide 36, the press frame will tilt to remain in supporting engagement with roller 44. After the press frame has been tilted to the desired angle, the clamp bolts 34 are positioned, relieving the load on roller 44.

The press legs and 22 are relatively thick in the transverse direction of the press and take the form of hollow cast members. This enables the press legs to be availed of for carrying conduits for oil or air or for permitting electric cables to be brought todesired positions about the press without the said conduits or cables interfering in any way with the working space about the press or with the operation of the press.

For example, referring to Figure 5, the space indicated at 70 which is a space between the diagonal ribs on the leg 22 can be availed of for providing electric and penuma'tic receptacles, as indicated at 72.

Similarly, due to the hollow construction of the legs, leg 22 may carry a panel 74 with push buttons thereon and the wiring to the said panel may be internal of the said legs.

One or both of the legs may also be provided with a recessed space, as at 76, in Figure 6, forming a compartmerit of substantial size for the purpose of receiving electric auxiliaries 78, such as relays and the like, and which compartment may be closed by a hinged door 80.

The screw or threaded rod 48 has been illustrated as having a squared end 66 for manual rotation thereof, but, if desired, the rod could be provided with power driving means, as illustrated in Figure 8, wherein a sprocket 90 is mounted on the end of threaded rod 48 and is connected by a chain 92 with a sprocket 94 on the output shaft of a speed reducer 96 driven by a reversible motor 98 arranged for selective energization by the machine operator.

It will be understood that this invention is susceptible to modification in order to adapt it to different usages and conditions, and, accordingly, it is desired to comprehend such modifications within this invention as may fall within the scope of the appended claims.

I claim:

1; In an inclinable press; a base, a frame pivotally supported on said base for tilting movement thereon, a guide formed in the base, a block movable in the guide, a screw extending along the guide and engaging the block adapted to adjust the position of the block along the guide, and a roller carried by the block engaging the frame to support it during tilting movements thereof brought about by adjustment of the block in the guide. 7

2. In an inclinable press; a base, a frame upstanding from the base, means pivotally supporting the frame on the base forwardly of the center of gravity of the frame, a guide formed in the base adjacent one side of the frame, a block slidable in the guide, a rod extending along the guide, said rod screw threadedly engaging said block for adjusting the position of the block along the guide, and a roller carried by the block engaging the back edge of the frame to support the frame during tilting movements thereof as brought about by adjustment of the block along the guide.

3. In an inclinable press; a base comprising spaced legs, a press frame upstanding from said base having its lower end between said legs, means pivotally supporting said frame on the legs forwardly of its center of gravity, one of said legs having a horizontal guide slot formed therein, a block slidable along said one leg in said guide slot, a rod extending along said one leg in said slot screw threadedly engaging said block, said rod extending out one end portion of said one leg and being rotatably supported against axial movement in the slot, a roller on the block supportingly engaging the back edge of the frame, and means for clamping the frame to the legs in a plurality of tilted positions thereof.

4. In an inclinable press; a base comprising spaced legs, a press frame upstanding from said base having its lower end between said legs, means pivotally supporting said frame on the legs forwardly of its center of gravity, one of said legs having a horizontal guide slot formed therein, a block slidable along said'one leg in said guide slot, a rod extending along said one leg in said slot screw threadedly engaging said block, said rod extending out one end portion of said one leg and being rotatably supported against axial movement in the slot, a roller on the block supportingly engaging an edge of the frame and means for effecting a positive connection between said frame and at least one of said legs in a plurality of tilted positions of said frame.

5. In an inclinable press; spaced press legs forming a base, a press frame pivoted to said base and upstanding therefrom, said base having a horizontal guide slot in one leg adjacent the frame, a block slidable in the slot having a roller supportingly engaging an edge of the frame, a threaded rod extending along the slot, said rod being adapted to screw threadedly engage the block and project out of the slot at the back of the leg, a bearingcap on the back of the leg, a bearing in the cap, a collar on the rod at the opposite side of the bearing from the cap, a collar on the rod abutting the cap, and means for rotating said rod.

References Cited in the file of this patent UNITED STATES PATENTS D. 121,009 Farley June 11, 1940 415,286 Warner Nov. 19, 1889 1,013,339 Verdin et a1. Ian. 2, 1912 1,945,282 Lindgren Jan. 30, 1934 2,164,245 Kienzle June 27, 1939 2,514,933 Byerlin July 11, 1950 2,546,100 Johansen et al. Mar. 20, 1951 2,573,574 Johansen Oct. 30, 1951 2,602,508 Patrick July 8, 1952 FOREIGN PATENTS 1,019,497 France Jan. 22, 1953 

